Warp-twisting-in machine



J. -H. BECKER. WARP 'TW ISTING-IN MACHINE.

. {APPLICATION FILEP NOV-24. I920- I 1,403,067, Patented Jan. 10, 1922,

3 SHEETS-SHEET I.

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WARP TWISTING-IN MACHINE.

APP LICATI ON FILED NOV-241 1920 Patented J an; 10, 1922.

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INVENTOR' 5 h H .BecKe'r,

4 TTORNEY.

J. H. BECKER.

WARP TWISTING-IN MACHINE.

APPLICATION FILED NOV 24, 1920 1,403 067 Patented Jan. 10; 1922.

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" ATTOR/VEV.

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JOHN H. BECKER, OF BROOKLYN, NEW YORK, ASSIGNOR T0 NAB-P TWISTING-IN MACHINE COMPANY, OF BROOKLYN, NEW YORK, A GORPORATION OF NEW YORK.

WARP-TWISTING-IN MACHINE.

icence.

Specification of Letters Patent. Pg tgntgd Jan. 1M}, 1g22 Application filed November 24, 1920. Seria1 No. 426,123.

To all whom it may concern:

Be it known that I, JOHN H. BECKER, a citizen of the United States, residing at Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in l/Varp-Twistingln Machines, of which the following is a specification.

This invention relates to warp twistingin machines of the class set forth in U. S. Letters Patent Nos. 6 18,7353, 675,350, 6236,72 1, 695,566 and 810,711. In these machines the end portions ofthe two warps (old and new) whose threads or endsi are to be twisted together are arranged to project upwardly side by side, each'having a cross therein, and their crossesare maintained by horizontally projecting and horizontally re ciprocating hook-bars which draw back edgewise first one and then the other of the crossed sheets of threads composing each warp and in this way release one by one the outermost threads, turning half-revolutions between their drawing-back movements. The means to hold the upward extremity of each warp must so hold it that its outermost margin (the one from which the threads are one by one separated and then advanced by feeding means to the twisting mechanism) is not forward of the hooks on the hook-bars at the moment they turn, else the hooks in turning will enter into the mass of threads instead of forward or clear of the same. ()nthe other hand,it is very desirable in these machines that when themain body of the warp is drawn back to leave the outermost thread separated the gap formed should be as considerable as possible, thus to break down filament connections which might prevent the separation, at least to such an extent that the feeding means would fail to pick off the thread supposed to be released. Accordingly, by the present invention I have made provision for movement of the said holding means lengthwise of the hook-bars and back and forth, such movement being timed so that the warps will be held back when the hook-bars are turning, thus to allow themito turn without entering the mass of threads, and held forward when the hook-bars draw back the main body of each warp, thus to increase the gap between each released thread and the main body of threads. In that adapta.

connections between the threads; but it will be understood that my invention is not de-- pendent on such up and down movement and that the movements .of the holding means may be accomplished otherwise than as stated. p I

Inthe drawings,

Figure 1 shows inside elevation, partly broken away, a warp twisting-in machine embodying my invention, the aforesaid upand-down movable structure and the holding means being respectively shown in their upward and forward positions;

Figure 2 is a vertical transverse sectional view looking rearward and taken just for wardofthe. hook-bars; 1

- Figure 3 shows in side elevation the upper part of the machine, said structure and holding means being respectively in their depressed and rearward positions; 1

Figure 3 is a rear fragmentary view, showing a certain cam, r r

Figuressland 5 are detail views in side and end elevation, partly in section, of a part of the holding means and the portion of said structure in which it moves; and

Figures 6 and 7 are a plan and a side elevation of said part.

The base a and upright 39 of the frame of the machine; the suitably rotated main shaft 0 and cam (Z, roller-carrying wheel 0 and pin f thereon; the spaced stationary rods ]tprojecting forward from the upright Z) and over whicht'he two warps'respectively extend, and, between said rods, the fork a under and then upwardly between the arms of which the two warps next extend, the same bein moved back and forth by having an arm 1 engaged in cam (Z; the warp drawingback means 7' in the formof rotary and forwardly and backwardly movable hook-bars projecting from said upright and arranged intwo pairs extending between the crossed sheets of the respective warps (Figure 2) with one hook-bar in each pairiabove and the other below the cross; the means to transmit half-revolutions to said-hook-bars' in? cluding the star-wheel 7c engageable by the pin f on wheel e, a gear Z rotating with said star-wheel, pinions m appertaining to the respective hook-bars and one of which meshes with gear Z, and a gear a meshing with all of said pinions; the slide 0 moved back and forth, from cam d, on a projection Z) of the upright and having the rear end portions of the hook-bars swivelled therein; the up-and-down movable structure 39 carrying on its forwardly projecting arm 79' the aforesaid holding means (to be described in detail) and also carrying at its lower (forked) end the forwardly projecting rods 9, so that when said structure is moved up a d down by engagement of roller 6 on wheel 6 with its cross-slot 1" the crossed warps will be moved, without slackening, relatively to .the hook-bars to break down filamentous connections joining the threads thereof; the twisting means generally denoted by s; the means to advance to meanss the warp threads as fast as they are separated, con- 'sisting in the example shown of a suitably rotated spiral t; and the swinging finger t which is suitably moved in a vertical plane from its position'in F i ure 1 to'its position in Figure 3 and is adapted in the latter position to hold'back the main body of each warp, are or may be all substantially the same as in the patents hereinbefore mentioned. Y The gearing connections are such that, as in the patents, the hook-bars perform the half-revolutions when forward;

, twisted together had their upstanding ends 'cut away said carriage would feed forward the unsevered upstanding ends; theposition of this bar in the patent is in a vertical plane back I of the hooks on the hook-bars when theyare in'the position for turning or fully forward. Such a bar or equivalent stop w is included according to my present invention, but it is movable, forming part of a slide mwhich moves in suitable ways y (Figures a and 5) at the under side of projection g) and is forked at'its rear end to accommo- 'date structure 72 and a cam 2 fixed to upright Z)" and has a roller'2'to bear on said cam;

The cam a is so formed that when the structure. pis depressed stop w will stand in its rearmost position (Figure 3), thus pressing back the warps and consequently, through them, the forwardly spring-pressed warp clamping carriages u, since the hookbars are to revolve at this time; and that when said structure is elevated (Figure l) the springs '22 are free, by forward pressure on the carriages, to cause the warps to'be held by the clamps considerably forward of their former positions, so that an ample gap A results between the thread released by the action of the hook-bars and the main body of thread in each warp.

Of course my invention is not limited to the specific combinations of parts shown, the underlying principle being the movement of warp holding means back and forth longltudinally of the hook-bars, said means being held back when the hook-bars are forward and turning and held forward when the hook-bars are back; and so, broadly, it is not material that there is up and down movement, or that the movement of the hold ing means back and forth is an'incident of this movement,'or that the holding means takes the form of a wrap carriage and a stop (as w) against the latter of which the former, spring-pressed, presses the "warp so as to bring the uncut threads always forward to a definite position. 7

By my invention there is not only'produced the desired gap A, but a certainamount of movement ofthe warp crosswlse which 1s very helpful 1n breaklng, down filament connections between thethreads, especially since there is some shiftingrof the carriages relatively to the stop to always going on.

Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent is r 1. Mechanism for effecting release one after another of the cross threads of two sheets of warp including, with a revoluble hookbar adapted to be interposed between the warp sheets and movable crosswise and against an'edge of the warp to drawback the crossed threads, holding means for the warp also movable crosswise thereof, a driving means, and means to transmit to the hookbar from the drlving means half-revolution movements and between such movements and to the hookebar and warp holding-means reciprocations in opposite directions and'crosswise of the warp. r

2. Mechanism for effecting release one after another of the crossed threads of two sheets of warp including, with a revolublc hook-bar .adapted to stand interposed between the warp'sheets and to engage an edge of the warp to'draw back the crossed threads, holding means for the warp movable crosswise thereof, a driving means, and means to transmit to the hookbar from the driving means half-revolution movements and between such'movements and to the warp-holding means a movement crosswise of the warp in the direction to allow the Warp to engage and be held back at said edge by the hook-bar, and then a movement in the opposite direction.

In combination, with a fixed structure, a hook-bar arranged to rotate therein, a supporting structure movable in the fixed structure, Warp holdingmeans movable in the supporting structure substantially parallel with the hook-bar, said hook-bar I being adapted to stand interposed between the sheets or crossed Warp threads, and means to turn the hook-bar at intervalsa half-revolution and on each turningmove the supporting structure, said fixed structure having means to move the Work holding means in the supporting structure on movement of the latter.

4. In combination, With a fixed structure, a hook-bar arranged to rotate therein, a supporting structure movable in the fixed structure, Warp holding means movable, in the supporting structure substantially parallel with the hook-bar, said hook-bar being adapted to stand interposed between the sheets of crossed Warp threads, and means to turn the hook-bar at intervals a half-revolution and on each turning reciprocate the supporting structure, said structures having coacting means to move the Warp holding means back and forth in the supporting structure on each reciprocation or the latter. 5. In combination, with the frame and movable structure of a machine of the kind specified, a Warp-clamping carriage movable back and "forth in said structure and spring-held in one direction, a cam on the frame, and a Warp-stop movable back and forth with said carriage and bearing against the cam and opposing movement of the carriage in said direction, all substantially as set forth.

' In testimony whereof I affix my signature.

JOHN H. enemas, 

